Apparatus for the removal of projecting hairs and the like from wool-yarn threads.



A 0. STO'HR. APPARATUS FOR THE REMOVAL OF PROJECTING HAIRS AND THE LIKE FROM WOOL YARN THREADS.

APPLICATION FILED NOV. 2, 1911.

EETS-SHELET 1.

COLUMBIA PLANOGRAPH co., WASHINGTON D. c.

0. STUHR.

APPARATUS FOR THE REMOVAL OF PROJEOTING HAIRS AND THE LIKE FROM WOOL YARN THREADS.

APPLICATION FILED NOV. 2, 1911.

' 1,062,806. Patented May 27, 1913.

.2 SHEETS-SHEET 2.

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UNITED STATES PA TENT oFFroE.

me s'roHn, 0F LEIPzIG-GoHLIs, GERMANY.

trainees FOR THE REMOVAL OF PROJECTING- HAIRS AND THE LIKE rnoivr WOOL- YARN THREADS.

Specification of Letters Patent.

Patented May 27,1913.

Application filed novembeii 2, 1911. Serial no. 658,158.

To all whom it may concern Be it known that I, O'rro S'roHR, a subject of the German Emperor, and residing at- Leipzig-Gohlis, Germany, have invented cer-l tain' new and useful Improvements in an Apparatus for the Removal of Projectingl ool -Yarnj Threads, of which the following is a speci-:

Hairs and the Like from fication.

The present invention relates to an im-; provement in machines for the removal of: projecting hairs, fibers and the like from; Valuable wool yarns such as are made from the so called Austrian wool are distinguished from ordinary yarns bythe ir smoothness and freedom from pro-,

wool yarn threads.

jecting hairs, and by their very glossy appearance.

It is the object of the present invention to provide an apparatus for treating the ordinary kind of wool yarns in such manner as to remove the fibers, hairs and the like which project from the yarn,.and to give the surface of said yarn a polish and gloss resembling that possessed by the best grades of wool yarn. This result is obtained by passing the yarn in a tensioned condition through concentric oscillating tubular knives which out 01f all hairs and fibers projecting from the surface of the yarn, after whichsaid yarn is made to travel over suitably heated surfaces where it is given a high degree of polish.

- One form of apparatus suitable for the purpose is illustrated in the accompanying drawings wherein, Figure 1' is a plan view of such portions of the machine as will clearly show the invention. Fig. 2 is a vertical sectional view through a part of the apparatus on an enlarged scale. Fig. 3 is a cross-sectional view of the apparatus on the line AA, Fig. 1. Fig. 1 is a side view of the cutting device on an enlarged scale. Fig. 5 is a vertical, longitudinal sectional view of the same.

Upon a rigid bed plate 1, a number of cutting devices 2 are mounted in axial line, through the center of which devices yarn 16 to be treated passes in a tensioned condition. Each cutting device 2 comprises a fixed standard 2, see Figs. 8, 1 and 5, supporting a bearing 2 formed with an inner cylindrical chamber 2. Mounted to oscillate in each bearing 2 is a tubular cutter 1, one end of which projects horizontally from said bearjecting radially from the head 4 through a slot in the bearing 2* is an arm 8 by'means of which an oscillating motion is'imparted to the tubular cutter through means hereinafter to be described. Concentricallymounted within the tubular cutter 4: is asecond tubular cutter 3, the outer end of which is armed with tapering cutting fingersfisimi lar to the fingers 5 which cooperate with said fingers to sever all projecting hairs from the yarn passing through the cutting device. The cutter 3 like the cutter 1 has an enlarged circular head 8 on its inner end within the chamber 2 from which projects an operating arm 7 as shown. ,A rod 9 con nects the arms 7 of all the cutting devices, while a similar rod 9 joins all the arms 8. Links 10 pivotally connected to said rods extend downwardly through the bed plate l beneath which their lower end are pivoted to one end of a lever 11 fulcrumed at 12, and by means of a disk 13 bearing a crankpin 14L engaging a slot 15 in the opposite end of the lever 11 said lever is caused to rock in a vertical plane when the disk is rotated,

imparting like motion to the rods 9 and 9 wh1ch through thelr connection to the arms 7 and 8, simultaneously operate thetubular cutters 3 and 4 in opposite directions. From theraet that the cutters 3 and 4- rock or oscillate in opposite directions the yarn is prevented from sticking or becoming entangled in the fingers through the catching or clogging of the projecting hairs with any portion of the cutting mechanism. The thread or yarn 16 under treatment is unwound-from a drum 17, or from spools, caps or the like, and passes around a grooved pulley 18 which forms a partof a brake device for properly tensioning the thread, thence in a straight line through each of the cutting devices 2 successively where all projecting hairs and fibers are removed, after which the thread is led to a fixed or revoluble heating member 19 to be polished, thence to a drum 20 upon which it is wound.-

In addition to the grooved pulley 18, the brake device comprises a shoe 21 lying within the groove of the pulley and extending around a large portion of its periphery against which it bears with greater or less pressure. Because of the extended engagement of the brake shoe with the yarn as it passes around the pulley 18, the yarn is securely and at the same time elastically supported in its passage through the cutting devices. To cause the brake shoe to press with a proper degree of force against the yarn and the pulley 18 and thus properly tension said yarn, the brake shoe is shown as mounted on a suitable support carried by the bed plate 1 which support permits said shoe to move radially with respect to the grooved pulley 18, and is held in contact with said pulley by any suitable means, as a spring 22.

It is to be noted that the yarn 16 leaves the pulley 18 at a tangent, and then passes absolutely centrally into the cutting devices in a straight line. After passing through the cutting devices the yarn is led to the fixed or revoluble heating member 19, and is there polished, thence it passes to the drum 20 upon which it is wound.

I claim 1. An apparatus of the kind described, a cutting device comprising a pair of concentric tubular knives through which a strand of yarn passes under tension, and means for simultaneously oscillating said knives in opposite directions to trim the surface of the yarn.

2. In an apparatus of the kind described, a cutting device comprising a pair of concentric tubular knives, through which a strand of yarn passes under tension, a bearing for supporting said knives in which they are adapted to rock independently, an arm on each knife, and means connected to said centric tubular knives through which a strand of yarn passes under tension, a head on one end of each knife from which projects an operating arm, and a tubular series of tapered fingers on their opposite ends, abearing for supporting said knives and their heads in which said knives are adapted to rock independently, and means connected to said arms for simultaneously oscillating the knives in opposite directions to trim the surface of the yarn.

a. In an apparatus of the kind described, the combination of a feeding mechanism for yarn, means for tensioning said yarn, a cutting device comprising a. pair of concentric tubular knives through which the yarn passes from the tensioning means, each knife being formed of a circular series of tapering fingers projecting from the ends of the knives, means for simultaneously oscillating said knives in opposite directions to trim the surface of the yarn, and a polishing surface over which the yarn passes from the cutters.

5. In an apparatus of the kind described, the combination of a feed for yarn, a brake device for tensioning said yarn, a plurality of independent cutting devices arranged in a straight line through which the yarn passes under tension, each of said cutting devices comprising a pair of concentric tubular knives formed of a circular series of tapering fingers, means for simultaneously operating said knives in opposite directions to trim the surface of the yarn, and polishing means over which said yarn passes from the cutters.

In testimony whereof, I afiix my signature in the presence of two witnesses.

OTTO sroi-m.

IVitnesses RUDOLPH FRICKE, ALBERT It. MoRAWE'rz.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents,

Washington, D. G. i 

